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爱思唯尔（Elsevier）出版公司最小气
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荷兰爱思唯尔（Elsevier）出版公司最小气啦，世界四大医学名刊，就《柳叶刀》》（The Lancet）医学杂志没有免费开放。
全部免费医学期刊见http://www.freemedicaljournals.com/index.htm#top
| 1. New England Journal of Medicine English ISSN: 0028-4793 EISSN: 1533-4406 FMJ Impact: 45,138 ISI Impact Factor: 47.050 Free after 6 months 1993-present Certain sections are free after 6 months. |
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| 3. JAMA: Journal of the American Medical Association English ISSN: 0098-7484 EISSN: 1538-3598 FMJ Impact: 23,399 ISI Impact Factor: 28.899 Free after 6 months 1883-present Certain sections are free after 6 months. |
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| 4. BMJ (British Medical Journal) English ISSN: 0959-8154 EISSN: 1468-5833 FMJ Impact: 15,612 ISI Impact Factor: 12.827 Free after 36 months 1988-present Title was 'British Medical Journal (Clinical research ed.)' until 1987. Free access to all articles prior to 2006. A one-time registration needs to be completed to access the archive, here: http://journals.bmj.com/cgi/register |
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